<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://cdn.jsdelivr.net/npm/vue@2.6.14/dist/vue.js"></script>
</head>

<body>
    <div id="app">
        <input type="text" v-model.trim="keyword" @keyup.enter="handleEnter">
      </div>
      
      <script>
          new Vue({
          el:"#app",
          data:{
            keyword:""
          },
          methods:{
            handleEnter(){
              console.log(this.keyword)
            }
          }
        })
      </script>
</body>

</html>